Electrical glow-light with illuminating-body of second-class conductor.



No. 648,5l7. Patented 'ma I, 1900.

K. ocns; V

ELECTRICAL GLOW LIGHT WITH ILLUMINATING BODY OF SECOND CLASS CONDUCTOR.

(Application filed Sept. 18, 1899.)

(No Model.)

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UNITED STATES PATENT OFFICE.

KARL oons, or BERLIN, eERt NY.

ELECTRICAL GLOW-LIGHT WITH ILLUMINATING-BODY OF SECOND-CLASS CONDUCTOR.

SPECIFICATION forming part of Letters Patent N 0. 648,517, dated May1,1900.

Application filed $eptem'ber 16, 1899. Serial No. 730,664. (No model.)

To aZZ whom, it may concern:

Be itknown that I, KARL OoHs, a subject of the Emperor of Germany,residing at Berlin, Germany, have invented certain newand usefulImprovements in Electrical Glow-Lights with Illuminating Bodies ofSecond Glass Conductors, of which the following is a specification.

This invention relates to improvements in electric lamps withilluminating bodies or filaments composed of second-class conductors,(electrolytes.

The lamp consists of a base which carries the illuminating-body and alamp-holder in the form of a switch-lamp holder for-receiving the base.

In the accompanying drawings, Figure 1 is a transverse vertical sectionthrough the lamp proper, and Fig. 2 is a transverse vertical sectionthrough the socket.

In the drawings, a is an electromagnet in the base A, having aspring-armature b, the deflection of which is limited by means of theset-screw c. The spring-contact pins g h 2' of the lamp-base 7ccorrespond to the tubular openings (to f, which they enter. The basealso carries the conducting-wires l m 02, running to theilluminating-body o and to the heating-body p, as well as a globe q. Ofthe current-conducting wires or leadsr s the one, r, runs to the coilzfof the electromagnet a and its armature b. The other, 8, runs to theswitch a and thence to the contact f..

When the lamp is put into the circuit. by turning the switch, thecurrent passes from the wire 7 through the armature b to the contactset-screw 0 over contacts e h to the main conductor m and theheating-body p, whence it returns through at i f u to s for the illuminating and heating bodies. When the illuminating body or filament 0has become a conductor in consequence of its being-heated by theheating-conductor, the current passes through the coilt of theelectromagnet a and through d 9 Z 0 to the common return-wire n. Thearmature b is now attracted and the heating-current interrupted at thescrew 0. The spring sliding contacts 61 e f g h 1; may be replacedaccording to circumstances by other known contact arrangements, such asthose of the Edison or Swan system.

What Iclaim, and desire to secure by Letters Patent, is-- 1. In a lampof the character described, the combination of three leading-in wiresand a glower and aheater, onelea'ding-in wire being common to the glowerand heater and the other two being connected to the glower and heaterrespectively, combined with a socket with three contacts cooperatin gwith the leading-in wires, a hand-switch for the common leading-in wireand an automatic interrupter for the leading-in wire in circuit with theheating device. 7

2. In a lamp of the character described, the combination of threeleading-in wires and a glower and aheater, one leading-in wire beingcommon to the glower and heater and the other two connected tothe'glower and heater respectively, combined with a socket with threecontacts cooperating with the leadingin wires, a hand-switch for thecommon leading-in wire and an electromagnet in circuit with the glowerand governing means for interrupting the circuit of the heating device.

8. In a lamp of the character described, the combination of aheating-circuit, a lightingcircuit comprised in part by a conductor ofthe second class, said lighting and heating circuits being supplied withcurrent from a common source, and a socket provided with automatic meansfor depriving the heatingcircuit of current and means for depriving thelighting-circuit of current to extinguish the lamp.

4. In a lamp of the character described, the combination of aheating-circuit, a lightingcircuit comprised in part by anilluminatingbody, the said heating-circuit being adapted to heat thesaid illuminatingbody and a socket provided with separate means fordepriving the heating and lighting circuits of current, substantially asdescribed.

5. In a lamp of the character described, the combination of a glower anda heater therefor, and a socket provided with electromagnetic means fordepriving the heater of current and means for depriving the glower of.

current to extinguish the light.

KARL OCIIS.

Witnesses HENRY HASPER, WoLnEMAE HAUPT.

